Type Geological formation Primary Anhydrite, dolomite Overlies Southesk Formation | Underlies Stettler Formation Other Shale | |
Thickness up to 38 metres (120 ft) Region Alberta
Western Canadian Sedimentary Basin | ||
The Crowfoot Formation is a stratigraphical unit of Frasnian age in the Western Canadian Sedimentary Basin.
Contents
It takes the name from Crowfoot Creek, a tributary of the Bow River and was first described in the Royalite Crowfoot No. 2 well, located near the creek by H.R. Belyea and D.J. McLaren in 1957.
LithologyEdit
The Crowfoot Formation consists of anhydrite, silty dolomite, with minor shale.
DistributionEdit
The Crowfoot Formation is typically 4 metres (10 ft) thick, but can reach up to 38 metres (120 ft).
Relationship to other unitsEdit
The Crowfoot Formation is overlain by the Stettler Formation and overlays the Southesk Formation.
It is equivalent to the Calmar Formation and part of the Graminia Formation in central Alberta and to the Torquay Formation in Saskatchewan, Manitoba and Montana.
References
Crowfoot Formation Wikipedia(Text) CC BY-SA